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                <article id="post-171"
                         class="post-171 post type-post status-publish format-standard hentry category-miscellaneous-traversal category-65">
                    <header class="entry-header">
                        <h1 class="entry-title">.end()</h1>
                        <hr>
                        <div class="entry-meta">
                            类别：<span class="category"><a href="../category/traversing/">Traversing</a> &gt; <a
                                href="../category/traversing/miscellaneous-traversal/">Miscellaneous Traversing</a></span>
                        </div><!-- .entry-meta -->
                    </header><!-- .entry-header -->

                    <div class="entry-content">
                        <article id="end1" class="entry method"><h2 class="section-title">
                            <span class="name">.end()</span><span class="returns">返回：<a
                                href="../../api.jquery.com/Types/index.html#jQuery">jQuery</a></span>
                        </h2>
                            <div class="entry-wrapper">
                                <p class="desc"><strong>描述：</strong>结束当前链中最近的筛选操作，并将匹配元素集返回到其以前的状态。</p>
                                <ul class="signatures">
                                    <li class="signature">
                                        <h4 class="name">
                                            <span class="version-details">新增版本：<a
                                                    href="../category/version/1.0/">1.0</a></span><a id="end"
                                                                                                     href="#end"><span
                                                class="icon-link"></span>.end()</a>
                                        </h4>
                                        <ul>
                                            <li>
                                                <div class="null-signature">此方法不接受任何参数。</div>
                                            </li>
                                        </ul>
                                    </li>
                                </ul>
                                <div class="longdesc" id="entry-longdesc">
                                    <p>大多数jQuery的<a href="../category/traversing/">DOM遍历</a
                                    >方法都在jQuery对象实例上操作，并生成一个新实例，以匹配不同的DOM元素集。这时候，就好像新的元素集被推到了对象内部维护的堆栈上。每个连续的过滤方法都会将一个新元素集推送到堆栈上。如果我们需要一个旧的元素集，我们可以使用<code
                                    >.end()</code>将这些元素集从堆栈中弹出。</p>
                                    <p>假设我们在一个页面上有两个短列表：</p>
                                    <div class="syntaxhighlighter xml">
                                        <table>
                                            <tbody>
                                            <tr>

                                                <td class="gutter">

                                                    <div class="line n1">1</div>

                                                    <div class="line n2">2</div>

                                                    <div class="line n3">3</div>

                                                    <div class="line n4">4</div>

                                                    <div class="line n5">5</div>

                                                    <div class="line n6">6</div>

                                                    <div class="line n7">7</div>

                                                    <div class="line n8">8</div>

                                                    <div class="line n9">9</div>

                                                    <div class="line n10">10</div>

                                                </td>

                                                <td class="code">
                                                    <pre><div class="container"><div class="line"><code><span
                                                            class="hljs-tag">&lt;<span class="hljs-name">ul</span> <span
                                                            class="hljs-attr">class</span>=<span class="hljs-string">&quot;first&quot;</span>&gt;</span></code></div></div><div
                                                            class="container"><div class="line"><code>  <span
                                                            class="hljs-tag">&lt;<span class="hljs-name">li</span> <span
                                                            class="hljs-attr">class</span>=<span class="hljs-string">&quot;foo&quot;</span>&gt;</span>list item 1<span
                                                            class="hljs-tag">&lt;/<span class="hljs-name">li</span>&gt;</span></code></div></div><div
                                                            class="container"><div class="line"><code>  <span
                                                            class="hljs-tag">&lt;<span
                                                            class="hljs-name">li</span>&gt;</span>list item 2<span
                                                            class="hljs-tag">&lt;/<span class="hljs-name">li</span>&gt;</span></code></div></div><div
                                                            class="container"><div class="line"><code>  <span
                                                            class="hljs-tag">&lt;<span class="hljs-name">li</span> <span
                                                            class="hljs-attr">class</span>=<span class="hljs-string">&quot;bar&quot;</span>&gt;</span>list item 3<span
                                                            class="hljs-tag">&lt;/<span class="hljs-name">li</span>&gt;</span></code></div></div><div
                                                            class="container"><div class="line"><code><span
                                                            class="hljs-tag">&lt;/<span class="hljs-name">ul</span>&gt;</span></code></div></div><div
                                                            class="container"><div class="line"><code><span
                                                            class="hljs-tag">&lt;<span class="hljs-name">ul</span> <span
                                                            class="hljs-attr">class</span>=<span class="hljs-string">&quot;second&quot;</span>&gt;</span></code></div></div><div
                                                            class="container"><div class="line"><code>  <span
                                                            class="hljs-tag">&lt;<span class="hljs-name">li</span> <span
                                                            class="hljs-attr">class</span>=<span class="hljs-string">&quot;foo&quot;</span>&gt;</span>list item 1<span
                                                            class="hljs-tag">&lt;/<span class="hljs-name">li</span>&gt;</span></code></div></div><div
                                                            class="container"><div class="line"><code>  <span
                                                            class="hljs-tag">&lt;<span
                                                            class="hljs-name">li</span>&gt;</span>list item 2<span
                                                            class="hljs-tag">&lt;/<span class="hljs-name">li</span>&gt;</span></code></div></div><div
                                                            class="container"><div class="line"><code>  <span
                                                            class="hljs-tag">&lt;<span class="hljs-name">li</span> <span
                                                            class="hljs-attr">class</span>=<span class="hljs-string">&quot;bar&quot;</span>&gt;</span>list item 3<span
                                                            class="hljs-tag">&lt;/<span class="hljs-name">li</span>&gt;</span></code></div></div><div
                                                            class="container"><div class="line"><code><span
                                                            class="hljs-tag">&lt;/<span class="hljs-name">ul</span>&gt;</span></code></div></div></pre>
                                                </td>
                                            </tr>
                                            </tbody>
                                        </table>
                                    </div>

                                    <p><code>.end()</code>方法主要在利用jQuery的链接属性时有用。当不使用链接时，我们通常可以通过变量名调用前面的对象，因此不需要操纵堆栈。但是，使用<code
                                    >.end()</code>，我们可以将所有方法调用串在一起：
                                    </p>
                                    <div class="syntaxhighlighter javascript">
                                        <table>
                                            <tbody>
                                            <tr>

                                                <td class="gutter">

                                                    <div class="line n1">1</div>

                                                    <div class="line n2">2</div>

                                                    <div class="line n3">3</div>

                                                    <div class="line n4">4</div>

                                                    <div class="line n5">5</div>

                                                    <div class="line n6">6</div>

                                                </td>

                                                <td class="code">
                                                    <pre><div class="container"><div class="line"><code>$( <span
                                                            class="hljs-string">&quot;ul.first&quot;</span> )</code></div></div><div
                                                            class="container"><div class="line"><code>  .find( <span
                                                            class="hljs-string">&quot;.foo&quot;</span> )</code></div></div><div
                                                            class="container"><div class="line"><code>    .css( <span
                                                            class="hljs-string">&quot;background-color&quot;</span>, <span
                                                            class="hljs-string">&quot;red&quot;</span> )</code></div></div><div
                                                            class="container"><div
                                                            class="line"><code>  .end()</code></div></div><div
                                                            class="container"><div class="line"><code>  .find( <span
                                                            class="hljs-string">&quot;.bar&quot;</span> )</code></div></div><div
                                                            class="container"><div class="line"><code>    .css( <span
                                                            class="hljs-string">&quot;background-color&quot;</span>, <span
                                                            class="hljs-string">&quot;green&quot;</span> );</code></div></div></pre>
                                                </td>
                                            </tr>
                                            </tbody>
                                        </table>
                                    </div>

                                    <p>此链仅在第一个列表中搜索<code>foo</code>类的项目，并将其背景变为红色。然后<code>.end()</code>将对象返回到调用<code
                                    >.find()</code>之前的状态，因此第二个<code>.find()</code>将查找<code>&lt;ul class=&quot;first&quot;&gt;</code
                                    >中的“.bar”，而不仅仅是列表中的 <code>&lt;li class=&quot;foo&quot;&gt;</code
                                    >，并将匹配元素的背景变为绿色。最终结果是，第一个列表中的项目1和项目3具有彩色背景，而第二个列表中的项目没有一个具有彩色背景。
                                    </p>
                                    <p>长jQuery链可以可视化为结构化代码块，过滤方法提供嵌套块的开头，<code>.end()</code>方法关闭嵌套块：</p>
                                    <div class="syntaxhighlighter javascript">
                                        <table>
                                            <tbody>
                                            <tr>

                                                <td class="gutter">

                                                    <div class="line n1">1</div>

                                                    <div class="line n2">2</div>

                                                    <div class="line n3">3</div>

                                                    <div class="line n4">4</div>

                                                    <div class="line n5">5</div>

                                                    <div class="line n6">6</div>

                                                    <div class="line n7">7</div>

                                                </td>

                                                <td class="code">
                                                    <pre><div class="container"><div class="line"><code>$( <span
                                                            class="hljs-string">&quot;ul.first&quot;</span> )</code></div></div><div
                                                            class="container"><div class="line"><code>  .find( <span
                                                            class="hljs-string">&quot;.foo&quot;</span> )</code></div></div><div
                                                            class="container"><div class="line"><code>    .css( <span
                                                            class="hljs-string">&quot;background-color&quot;</span>, <span
                                                            class="hljs-string">&quot;red&quot;</span> )</code></div></div><div
                                                            class="container"><div
                                                            class="line"><code>  .end()</code></div></div><div
                                                            class="container"><div class="line"><code>  .find( <span
                                                            class="hljs-string">&quot;.bar&quot;</span> )</code></div></div><div
                                                            class="container"><div class="line"><code>    .css( <span
                                                            class="hljs-string">&quot;background-color&quot;</span>, <span
                                                            class="hljs-string">&quot;green&quot;</span> )</code></div></div><div
                                                            class="container"><div
                                                            class="line"><code>  .end();</code></div></div></pre>
                                                </td>
                                            </tr>
                                            </tbody>
                                        </table>
                                    </div>

                                    <p>最后一个<code>.end()</code>是没有必要的，因为jQuery对象即将释放。这种写法<code
                                    >.end()</code>提供了视觉对称性和完成感——使程序（至少在某些开发人员看来）更具可读性，但由于它额外调用了一个函数，性能会稍有下降。</p>
                                </div>
                                <section class="entry-examples" id="entry-examples">
                                    <header><h2>示例：</h2></header>
                                    <div class="entry-example" id="example-0">
                                        <p>选择所有p标签，在这些段落中查找span标签，然后恢复p标签的选择。</p>
                                        <div class="syntaxhighlighter xml">
                                            <table>
                                                <tbody>
                                                <tr>

                                                    <td class="gutter">

                                                        <div class="line n1">1</div>

                                                        <div class="line n2">2</div>

                                                        <div class="line n3">3</div>

                                                        <div class="line n4">4</div>

                                                        <div class="line n5">5</div>

                                                        <div class="line n6">6</div>

                                                        <div class="line n7">7</div>

                                                        <div class="line n8">8</div>

                                                        <div class="line n9">9</div>

                                                        <div class="line n10">10</div>

                                                        <div class="line n11">11</div>

                                                        <div class="line n12">12</div>

                                                        <div class="line n13">13</div>

                                                        <div class="line n14">14</div>

                                                        <div class="line n15">15</div>

                                                        <div class="line n16">16</div>

                                                        <div class="line n17">17</div>

                                                        <div class="line n18">18</div>

                                                        <div class="line n19">19</div>

                                                        <div class="line n20">20</div>

                                                        <div class="line n21">21</div>

                                                        <div class="line n22">22</div>

                                                        <div class="line n23">23</div>

                                                        <div class="line n24">24</div>

                                                        <div class="line n25">25</div>

                                                        <div class="line n26">26</div>

                                                        <div class="line n27">27</div>

                                                        <div class="line n28">28</div>

                                                        <div class="line n29">29</div>

                                                        <div class="line n30">30</div>

                                                        <div class="line n31">31</div>

                                                        <div class="line n32">32</div>

                                                        <div class="line n33">33</div>

                                                        <div class="line n34">34</div>

                                                        <div class="line n35">35</div>

                                                        <div class="line n36">36</div>

                                                        <div class="line n37">37</div>

                                                        <div class="line n38">38</div>

                                                        <div class="line n39">39</div>

                                                        <div class="line n40">40</div>

                                                        <div class="line n41">41</div>

                                                        <div class="line n42">42</div>

                                                        <div class="line n43">43</div>

                                                        <div class="line n44">44</div>

                                                        <div class="line n45">45</div>

                                                        <div class="line n46">46</div>

                                                        <div class="line n47">47</div>

                                                        <div class="line n48">48</div>

                                                        <div class="line n49">49</div>

                                                        <div class="line n50">50</div>

                                                        <div class="line n51">51</div>

                                                        <div class="line n52">52</div>

                                                        <div class="line n53">53</div>

                                                        <div class="line n54">54</div>

                                                        <div class="line n55">55</div>

                                                        <div class="line n56">56</div>

                                                        <div class="line n57">57</div>

                                                        <div class="line n58">58</div>

                                                        <div class="line n59">59</div>

                                                        <div class="line n60">60</div>

                                                        <div class="line n61">61</div>

                                                        <div class="line n62">62</div>

                                                        <div class="line n63">63</div>

                                                        <div class="line n64">64</div>

                                                        <div class="line n65">65</div>

                                                        <div class="line n66">66</div>

                                                        <div class="line n67">67</div>

                                                        <div class="line n68">68</div>

                                                    </td>

                                                    <td class="code">
                                                        <pre><div class="container"><div class="line"><code><span
                                                                class="hljs-meta">&lt;!doctype <span
                                                                class="hljs-meta-keyword">html</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">html</span> <span
                                                                class="hljs-attr">lang</span>=<span class="hljs-string">&quot;en&quot;</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">head</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;<span class="hljs-name">meta</span> <span
                                                                class="hljs-attr">charset</span>=<span
                                                                class="hljs-string">&quot;utf-8&quot;</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;<span
                                                                class="hljs-name">title</span>&gt;</span>end demo<span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">title</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;<span
                                                                class="hljs-name">style</span>&gt;</span><span
                                                                class="css"></span></code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-selector-tag">p</span>, <span
                                                                class="hljs-selector-tag">div</span> {</code></div></div><div
                                                                class="container"><div class="line"><code>    <span
                                                                class="hljs-attribute">margin</span>: <span
                                                                class="hljs-number">1px</span>;</code></div></div><div
                                                                class="container"><div class="line"><code>    <span
                                                                class="hljs-attribute">padding</span>: <span
                                                                class="hljs-number">1px</span>;</code></div></div><div
                                                                class="container"><div class="line"><code>    <span
                                                                class="hljs-attribute">font-weight</span>: bold;</code></div></div><div
                                                                class="container"><div class="line"><code>    <span
                                                                class="hljs-attribute">font-size</span>: <span
                                                                class="hljs-number">16px</span>;</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  }</code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-selector-tag">div</span> {</code></div></div><div
                                                                class="container"><div class="line"><code>    <span
                                                                class="hljs-attribute">color</span>: blue;</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  }</code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-selector-tag">b</span> {</code></div></div><div
                                                                class="container"><div class="line"><code>    <span
                                                                class="hljs-attribute">color</span>: red;</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  }</code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">style</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;<span
                                                                class="hljs-name">script</span> <span class="hljs-attr">src</span>=<span
                                                                class="hljs-string">&quot;https://code.jquery.com/jquery-3.5.0.js&quot;</span>&gt;</span><span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">script</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">head</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">body</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">p</span>&gt;</span></code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  Hi there <span class="hljs-tag">&lt;<span
                                                                class="hljs-name">span</span>&gt;</span>how<span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">span</span>&gt;</span> are you <span
                                                                class="hljs-tag">&lt;<span class="hljs-name">span</span>&gt;</span>doing<span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">span</span>&gt;</span>?</code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span class="hljs-name">p</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">p</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  This <span
                                                                class="hljs-tag">&lt;<span class="hljs-name">span</span>&gt;</span>span<span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">span</span>&gt;</span> is one of</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  several <span class="hljs-tag">&lt;<span
                                                                class="hljs-name">span</span>&gt;</span>spans<span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">span</span>&gt;</span> in this</code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;<span class="hljs-name">span</span>&gt;</span>sentence<span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">span</span>&gt;</span>.</code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span class="hljs-name">p</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">div</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  Tags in jQuery object initially: <span
                                                                class="hljs-tag">&lt;<span class="hljs-name">b</span>&gt;</span><span
                                                                class="hljs-tag">&lt;/<span class="hljs-name">b</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span class="hljs-name">div</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">div</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  Tags in jQuery object after find: <span
                                                                class="hljs-tag">&lt;<span class="hljs-name">b</span>&gt;</span><span
                                                                class="hljs-tag">&lt;/<span class="hljs-name">b</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span class="hljs-name">div</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">div</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  Tags in jQuery object after end: <span
                                                                class="hljs-tag">&lt;<span class="hljs-name">b</span>&gt;</span><span
                                                                class="hljs-tag">&lt;/<span class="hljs-name">b</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span class="hljs-name">div</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span
                                                                class="hljs-name">script</span>&gt;</span><span
                                                                class="javascript"></span></code></div></div><div
                                                                class="container"><div class="line"><code>jQuery.fn.showTags = <span
                                                                class="hljs-function"><span class="hljs-keyword">function</span>(<span
                                                                class="hljs-params"> n </span>) </span>{</code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-keyword">var</span> tags = <span
                                                                class="hljs-built_in">this</span>.map(<span
                                                                class="hljs-function"><span class="hljs-keyword">function</span>(<span
                                                                class="hljs-params"></span>) </span>{</code></div></div><div
                                                                class="container"><div class="line"><code>    <span
                                                                class="hljs-keyword">return</span> <span
                                                                class="hljs-built_in">this</span>.tagName;</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  })</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  .get()</code></div></div><div
                                                                class="container"><div class="line"><code>  .join( <span
                                                                class="hljs-string">&quot;, &quot;</span> );</code></div></div><div
                                                                class="container"><div class="line"><code>  $( <span
                                                                class="hljs-string">&quot;b&quot;</span> ).eq( n ).text( tags );</code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-keyword">return</span> <span
                                                                class="hljs-built_in">this</span>;</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>};</code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code>$( <span
                                                                class="hljs-string">&quot;p&quot;</span> )</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  .showTags( <span
                                                                class="hljs-number">0</span> )</code></div></div><div
                                                                class="container"><div class="line"><code>  .find( <span
                                                                class="hljs-string">&quot;span&quot;</span> )</code></div></div><div
                                                                class="container"><div class="line"><code>    .showTags( <span
                                                                class="hljs-number">1</span> )</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>    .css( <span class="hljs-string">&quot;background&quot;</span>, <span
                                                                class="hljs-string">&quot;yellow&quot;</span> )</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  .end()</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  .showTags( <span
                                                                class="hljs-number">2</span> )</code></div></div><div
                                                                class="container"><div class="line"><code>  .css( <span
                                                                class="hljs-string">&quot;font-style&quot;</span>, <span
                                                                class="hljs-string">&quot;italic&quot;</span> );</code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">script</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">body</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">html</span>&gt;</span></code></div></div></pre>
                                                    </td>
                                                </tr>
                                                </tbody>
                                            </table>
                                        </div>

                                        <h4>演示：</h4>
                                        <div class="demo code-demo"></div>
                                    </div>
                                    <div class="entry-example" id="example-1">
                                        <p>选择所有p标签并查找其中的span标签，然后恢复选择p标签。</p>
                                        <div class="syntaxhighlighter xml">
                                            <table>
                                                <tbody>
                                                <tr>

                                                    <td class="gutter">

                                                        <div class="line n1">1</div>

                                                        <div class="line n2">2</div>

                                                        <div class="line n3">3</div>

                                                        <div class="line n4">4</div>

                                                        <div class="line n5">5</div>

                                                        <div class="line n6">6</div>

                                                        <div class="line n7">7</div>

                                                        <div class="line n8">8</div>

                                                        <div class="line n9">9</div>

                                                        <div class="line n10">10</div>

                                                        <div class="line n11">11</div>

                                                        <div class="line n12">12</div>

                                                        <div class="line n13">13</div>

                                                        <div class="line n14">14</div>

                                                        <div class="line n15">15</div>

                                                        <div class="line n16">16</div>

                                                        <div class="line n17">17</div>

                                                        <div class="line n18">18</div>

                                                        <div class="line n19">19</div>

                                                        <div class="line n20">20</div>

                                                        <div class="line n21">21</div>

                                                        <div class="line n22">22</div>

                                                        <div class="line n23">23</div>

                                                        <div class="line n24">24</div>

                                                        <div class="line n25">25</div>

                                                        <div class="line n26">26</div>

                                                    </td>

                                                    <td class="code">
                                                        <pre><div class="container"><div class="line"><code><span
                                                                class="hljs-meta">&lt;!doctype <span
                                                                class="hljs-meta-keyword">html</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">html</span> <span
                                                                class="hljs-attr">lang</span>=<span class="hljs-string">&quot;en&quot;</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">head</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;<span class="hljs-name">meta</span> <span
                                                                class="hljs-attr">charset</span>=<span
                                                                class="hljs-string">&quot;utf-8&quot;</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;<span
                                                                class="hljs-name">title</span>&gt;</span>end demo<span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">title</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;<span
                                                                class="hljs-name">style</span>&gt;</span><span
                                                                class="css"></span></code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-selector-tag">p</span> {</code></div></div><div
                                                                class="container"><div class="line"><code>    <span
                                                                class="hljs-attribute">margin</span>: <span
                                                                class="hljs-number">10px</span>;</code></div></div><div
                                                                class="container"><div class="line"><code>    <span
                                                                class="hljs-attribute">padding</span>: <span
                                                                class="hljs-number">10px</span>;</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  }</code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">style</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code>  <span
                                                                class="hljs-tag">&lt;<span
                                                                class="hljs-name">script</span> <span class="hljs-attr">src</span>=<span
                                                                class="hljs-string">&quot;https://code.jquery.com/jquery-3.5.0.js&quot;</span>&gt;</span><span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">script</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">head</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">body</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">p</span>&gt;</span><span
                                                                class="hljs-tag">&lt;<span class="hljs-name">span</span>&gt;</span>Hello<span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">span</span>&gt;</span>, how are you?<span
                                                                class="hljs-tag">&lt;/<span class="hljs-name">p</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;<span
                                                                class="hljs-name">script</span>&gt;</span><span
                                                                class="javascript"></span></code></div></div><div
                                                                class="container"><div class="line"><code>$( <span
                                                                class="hljs-string">&quot;p&quot;</span> )</code></div></div><div
                                                                class="container"><div class="line"><code>  .find( <span
                                                                class="hljs-string">&quot;span&quot;</span> )</code></div></div><div
                                                                class="container"><div
                                                                class="line"><code>  .end()</code></div></div><div
                                                                class="container"><div class="line"><code>  .css( <span
                                                                class="hljs-string">&quot;border&quot;</span>, <span
                                                                class="hljs-string">&quot;2px red solid&quot;</span> );</code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">script</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code> </code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">body</span>&gt;</span></code></div></div><div
                                                                class="container"><div class="line"><code><span
                                                                class="hljs-tag">&lt;/<span
                                                                class="hljs-name">html</span>&gt;</span></code></div></div></pre>
                                                    </td>
                                                </tr>
                                                </tbody>
                                            </table>
                                        </div>

                                        <h4>演示：</h4>
                                        <div class="demo code-demo"></div>
                                    </div>
                                </section>
                            </div>
                        </article>
                    </div><!-- .entry-content -->

                </article><!-- #post-171 -->
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